Shinsen Shōjiroku
Shinsen Shōjiroku (新撰姓氏録, "Newly Selected Record of Hereditary Titles and Family Names") is an imperially commissioned Japanese genealogical record. It was first conceived during Emperor Kanmu's reign in 799 to properly track the clans' then ambiguous lineages, but was not completed before his death in 806. The project was later carried over by his son, Emperor Saga. Thirty volumes in length, it was compiled by the Emperor's brother, Imperial Prince Manda (万多親王, 788–830) and by the late Emperor Kanmu's associates such as Fujiwara no Otsugu, and Fujiwara no Sonohito et al. It was initially completed in 814, but underwent a revision to be recompleted in 815.